Water-meter.



2 SHEETS-SHEET 1.

Patented Mar. 9, 1909.

M. MILLER.

WATER METER.

APPLICATION FILED MAR. 28, 1908 Lg w. M)

I [Much/0r.

y M ZIM M. MILLER.

WATER METER.

APPLICATION FILED MAR. 28, 1908.

91 4,440,, Patented Mar. 9, 1909.

2 SHEETSSHEET 2.

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' MARSHALL MILLER, or 'sT.' L oUIs, MISSOURI.

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chemical supply pump to add a chemical solution or mixture toa current ofwater in a definite pro ortion. This object arid various other 0 jects of detail ,will be made apparent in the following specification and claims, taken in connection with the accompanying drawin s, in'which reciprocations o two branches 22 and 23.

'ont

Figure 1 s a orizontal section of myimproved device. Fig. 2 is .a side elevation, and Fig. 3 1s a perspective view of a detail.

In the art of purifying large quantities of water, it is desirable to ming e with the water a, definite proportion of a chemical mixture or solution, and some times it is also desirable to inject air into water to be purified. Generally, the water goes to a settling tank or filter after the chemical mixture or solution is added to it. 7 It is apparent that it is desirable to make the proportion of chemical to the water fairly constant. I have, therefore, provided a iston meter, the'number of f which is definitely proportional to the uantity of water flowing through the con uit in which the meter is interposed. 1 The iston of this meter actuatesa small pump, which by its reci rocation forces the chemical mixture or so ution into the main current of water. For this use the meter should have certain characteristics which have been attained by my present invention. Referring to the drawings, 15 isa cylinder within which a piston 16 connected to a piston rod 17 is ada ted to reciprocate. At each end'of the cy nder 15 conduits 18 and 19 are connected, the former having two branches 20 and 21 and the latter having the The two branches 20- and 22 are inlet branches leading from a common inlet passage 24. In these respec tive branches 20 and 22 are valve seats 25 and 26 adapted to be closed alternately by the puppet valves 27 and 28, which are fixed e common valve stem 29, and this projects through the stuffing box 30 parallel wlth the main piston rod 17. On the oppo- Speci fica tion of Le tters Patent. 5 Application filed fiarch 28, 1908. Serial No. 423,946.

Eatented. March 9, 1909.

site side of the cylinder 15 is the outlet conduit 31 into which the two outlet conduits 21 and 23 unite. One branch 21 has a valve seat 34 adapted to be closed by the valve 36, and the other branch 23 has a valve seat 35 adapted to be closed by the valve 37. These valves 36 and 37 are on a common stem 38 which rojects throu h the stuiiing box 39 in aralle relation to-t e main piston rod 17 t will be noted from an examination of Fig. 1 that the inlet valves 27 and 28 seat themselves by moving away from the main inlet conduit 24, and that the outlet valves 36 and 37 seat themselves by moving toward the main outlet conduit 31. V

The stuffing box for the main piston rod 17 is indicated by the reference numeral 40. On either side of this, supports 41 are provided and on each of these are two pivots 42 and 43 which constitute fulcrums for the two levers 44 and 45. Each lever has forked endsindicated in Fig. 2the inner ends embracing the main piston rod 17 and the outer ends embracing one or the other of the. two valve stems 29 and 38. On each valve stem there are two adjustabletappets 46 and 47 which lie spaced apart between the outer ends of the two levers 44 and 45. Between the tappet 46 and the adjacent end of the lever 44 is the coil spring 48 and between the tappet 47 and the correspondin end of the lever is the coil spring 49. the main iston rod 17 between the inner ends of all the evers is a single tappet 50. The outer ends of the valvestems 29 and 38lare supported by the brackets 52. r

A transverse shaft 53 is supported in bearings in the brackets 54 and carries a crank 55 which connects through a link 59 with the plunger in the chemical pump 58. Another crank 56 on the same shaft53 set at substantially right angles to the crank 55 is ada ted to have its lower forked ends engaged a ternately by the tap ets 51 and 57 on the main piston rod 17. he chemical pump 58 has the inlet and outlet check valves 60 and 61. On its extreme outer end the main piston rod 17 carries a plunger which is adapted to re.- ciprocate in the air pump cylim er 62; 63 and 64 being the inlet and outlet check valves,

. r'es ectivel ith the parts as shown in the drawings, the water is flowing in through the passage 24 to the branch passage 20 and pushing the piston 16 to the right, while the water contained in the cylinder 15 is flowing out through the branch passage 23 todtheniain outflow-conduit 31. This movement will continue until the tappet 50 on the main piston rod 17 strikes the inner ends of the two levers 45. When this happens, said levers be quickly-shifted to the positions indicated in dotted lines, thus compressin the springs 49 against the tappets 47 unti the pressurebecomes so great asto' lift the valves 28 and 36 from theirjrespec-tive seats 26 and '34. It is 'to be remembered that thecurrent of Water flowing in through the passage 24 and out through the passage 31 is substantially constant. Immediately upon the lifting of thevalv'e' 28 from its seat 26', the

- current of water which sweeping through I f the valve seat 25 will catch the valve 27 and quickly and firmly seat it. Similarly, the

1 water flowing through the branch passage 23 once apparent that the direction of flowof.

tch th valve 37 and seat it. It is. at

" the water into the cylinder 15 and outtherej j, "from-will be reversed and the iston will be pushed back from the right tot e left. The Q25? continued action of thepumpwill be appar- -.-entfrom theforegoingdescriptlon. vThis metier can be inte ose I a anypoint an not necessarily at the point where it empties into an open tank.

t increases the back pressure'on the moving column of water to scarcely a perceptible ex;

. tent.

The combination of positivemeans to unseat the valves and such an arrangement of the main-piston 16. v.The' mechanism by I simple and that they are then opfpositely seated, by the B5 sweep of the current 0 water isvery effective and 'avoids knocking at the ends of the stroke which the v es'are actuated is stron and is very easil accessible so t at it aired orrea justed without diflie tappets 4;6 47 can be adcan be re culty;

inv the supply conduit juste'd so that the springs 48 and 49 shall beput underthe most appropriate tension for smooth work.

What I claim is: 1. In a device of the class described, a

cylinder, a piston therein, a piston rod, a pair of inlet conduits leading to the respective ends of the cylinder on one side thereof, a pair of outlet conduits leadin therefrom-on the other side, valves for sac of these conduits, all of said valves being adapted to be heldrto their seats by fluid pressure, valve stems, the valves on each side being on a common stem arallel to the main piston rod,

tapp'ets on eac valve stemand'on the main piston rod, and intermcdiately pivoted levers feach adapted to be engaged by a piston ro tappet at one end and by a valve stem tappet v att e'oth'er e'nd'.

2. In a device of the class described, ;a

cylinder, a piston therein, a piston rod cone nected thereto, inlet and outlet. conduits 'c0n-' 1 nected to the cylinder on o posite sides 'therej 5 65 thereon an outlet valve stem on the. outlet. .r lves thereon, two leverson each side I each having an'intermedi'ate fulcrum betw'ee r'i.

of, an inlet valve stem on t e inlet side, valves side, va

the pistonrod and valve stem, 't'a' peta'on; 3 the piston rod adapted'to'en age t e inner ends of the levers, tappets on t evalve stems ada ted to be engaged b t the outer ends of,

the eversfand' prings etween; the v'alve. ets and the corresponding e' d f I 75-'19 

